Atec Agilent-34970A-3499ABC - Manual (Page 5)

5
3499A/B/C
User Interface
The 3499A/B/C is easy to manually
control by pushing front-panel
buttons, or program using SCPI
(Standard Commands for Program-
mable Instruments) commands,
HP 3488A commands or the con-
venient Plug&Play or IVI drivers.
The 3499A/B/C user interfaces
can control switch states as well
as implement the scan and moni-
toring features.
Measurements
The 3499A/B/C provides a wide
assortment of switch capability as
well as Digital I/O and DAC. The
3499A/B/C is a valued component
in electronics test systems for
connecting instruments such as
DMMs, counters, spectrum analyz-
ers, LCR meters, signal sources,
power supplies and oscilloscopes.
The 3499A/B/C can also be used
for applications that require
microwave, and optics switching.
Innovative parallel driving circuits
are used in the 3499A/B/C mod-
ules to open/close switches simul-
taneously, which significantly
increases test throughput. The
3499A/B/C does not have an inter-
nal integrated DMM for making
measurements as the 34970A does.
Scanning & Monitoring
The 3499A/B/C can be program-
med to perform a channel scan, or
channel monitoring either from
the front panel, or by using software
commands. Up to 200 channels
and/or bits can be included in one
scan list. Once a scan is set up,
the user can select an arm source,
a trigger source, the number of
sweeps, and the delay time for
each individual channel.
The 3499A/B/C monitor feature
allows users to continuously moni-
tor a selected switch or module
status from the front display. The
3499A/B/C status can be a specific
switching channel, a digital I/O
port, or the state of all switches or
digital I/O on one plug-in module.
A single channel can be monitored
continuously even during an
instrument scan.
The 3499A/B/C is able to store
and recall instrument setups. The
instrument setups include the sta-
tus of relay channels, and/or the
static digital I/O state, module con-
figuration, as well as scanning
setups (scan lists, arm count,
arm source, etc.). Table 3 below
includes the scan rates for the
34970A and 3499A/B/C modules.
34970A 3499A/B/C
Module Type Modules Scan Rate Modules Scan Rate
Ch/s Ch/s
Multiplexer 34901A 20 Ch armature 120 N2260A 40 Ch armature 80
34902A 20 Ch reed 120 N2266A 40 Ch reed 350
34908A 40 Ch 1 70 N2270A 10 Ch 1000V 100
wire armature
44470A 10 Ch 43
44470D 20 Ch 43
General 34903A 20 Ch 120 N2261A 40 Ch 80
Purpose N2267A 8 Ch, 8A 20
Switch 44471A 10 Ch 43
44471D 20 Ch 43
44477A 7 Ch SPDT 43
(Form C)
Matrix 34904A 4x8 120 N2262A 4x8 80
44473A 4x4 43
Digital I/O N2263A 32-bit TTL
44474A 16-bit TTL
Multifunction 34907A Two 8-bit Dig I/O, N2264A 12 GP, 3 GP 5A, 80
26-bit Event Counter, 16-bit Dig I/O
Two 16-bit Analog out N2265A 4x4 matrix, 80
16-bit Dig I/O
N2269A 2 DAC, 80
16-bit Dig I/O
Fiber-Optical N2280A Quad 1x2 50
Multiplexer N2281A Dual 1x4 40
N2282A Single 1x8 4
RF & 34905A Dual 4 Ch 2G 50 Ω 60 N2268A Dual 1x4 3.5G 50 Ω 20
Microwave 34906A Dual 4 Ch 2G 75 Ω 60 N2272A Single 1x9 1.0G 50 Ω
N2276A Dual 1x6 20G 50 Ω 40
N2276B Relay Driver 40
(2 switches)
44472A Dual 1x4 300M 50 Ω 43
44478A Dual 1x4 1.3G 50 Ω 43
44478B Dual 1x4 1.3G 75 Ω 43
44476A Triple 1x2 18G 50 Ω 43
44476B Relay driver 43
(2 switches)
Table 3. 34970A and 3499A/B/C module scan rates